Planing assembly and surgical equipment

Abstract

The utility model discloses a planing assembly and surgical equipment, and relates to the technical field of medical instruments, the planing assembly comprises: an outer knife assembly comprising a connecting rod, a bending body and a knife head which are connected in sequence, the two sides of the front end of the bending body are respectively provided with a first connecting position and a second connecting position, and the connecting rod is elastically connected with the second connecting position; the inner cutter assembly is arranged in the outer cutter assembly in a bendable mode; the driving piece is slidably arranged on the connecting rod in a sleeving mode and is in driving connection with the first connecting position so as to drive the bending body to be bent; the operating part is rotationally arranged on the connecting rod in a sleeving manner and is in threaded connection with the connecting rod; according to the planing assembly, the bending angle of the planing tool can be precisely adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a planing component and a surgical device. Background Art

[0002] Planers are widely used in many fields such as otolaryngology and joint surgery. Their main function is to remove diseased tissue. Since the natural channels inside the human body are narrow and full of various bends, in order to reach and treat the patient area, planers generally need to be designed with multiple bending angles. However, changing planers during surgery is time-consuming and laborious. For this reason, an adjustable angle planer tool has been developed on the market. The planer can switch between multiple gears to adjust the angle. However, it is difficult to fine-tune the angle of this planer and it is difficult to meet the needs of precise surgery. Utility Model Content

[0003] The main purpose of the utility model is to provide a planing assembly and a surgical device, which are intended to precisely adjust the bending angle of the planer.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a planing assembly, comprising:

[0005] The outer knife assembly comprises a connecting rod, a bending body and a knife head which are connected in sequence, wherein a first connecting position and a second connecting position are respectively provided on both sides of the front end of the bending body, and the connecting rod is elastically connected to the second connecting position;

[0006] An inner knife assembly is bendably disposed inside the outer knife assembly;

[0007] A driving member, slidably sleeved on the connecting rod and drivingly connected to the first connecting position to drive the bending body to bend;

[0008] An operating member is rotatably sleeved on the connecting rod and is threadedly connected to the operating member.

[0009] In one embodiment, the planing assembly further includes a pull wire assembly, the pull wire assembly includes a first pull wire and a second pull wire, the first connection position is connected to the driving member via the first pull wire, and the second connection position is elastically connected to the connecting rod via the second pull wire.

[0010] In one embodiment, the planing assembly further includes an elastic member, wherein the elastic member has a supporting end and a free end opposite to each other, wherein the supporting end is connected to the driving member, and the free end is connected to the second pull wire.

[0011] In one embodiment, a second limiting groove is recessed on the side wall of the connecting rod, a second limiting body is protruded on the free end, the second limiting body is slidably matched with the second limiting groove, and the second pull wire is connected to the second limiting body.

[0012] In one embodiment, a first limiting groove is recessed on a side wall of the connecting rod, a first limiting body is protruded from the driving member, the first limiting body is slidably matched with the first limiting groove, and the first pull wire is connected to the first limiting body.

[0013] In one embodiment, the planing assembly further comprises a locking member, wherein the locking member is sleeved on the connecting rod, and the locking member is threadedly engaged with the connecting rod to move along the axial direction of the connecting rod to abut against or disengage from the driving member.

[0014] In one embodiment, the planing assembly further includes a limiting member, which is sleeved on the connecting rod, and cooperates with the locking member to limit the operating member in the axial direction of the connecting rod.

[0015] In one embodiment, a first identification body is disposed on the outer peripheral wall of the operating member, a second identification body is disposed on the outer peripheral wall of the limiting member, a plurality of the second identification bodies are disposed at intervals along the circumference of the limiting member, and the second identification body is positioned opposite to the first identification body.

[0016] In one embodiment, the planing assembly further comprises a flexible sealing sleeve, which is sleeved on the outside of the bending body; and / or the bending body is configured as a snake tube or a spring tube; and / or an anti-slip groove is provided on the outer peripheral wall of the operating member.

[0017] The utility model also provides a surgical device, comprising the above-mentioned planing assembly.

[0018] Compared with the prior art, in the technical solution of the utility model, the planing assembly includes an outer knife assembly, and the outer knife assembly includes a connecting rod, a bending body and a knife head connected in sequence. The bending body can be bent so that the knife head can adjust the angle. An inner knife assembly is arranged inside the outer knife assembly, and the inner knife assembly can be bent along with the outer knife assembly. In addition, the inner knife assembly can rotate relative to the outer knife assembly, and the planing of the lesion is achieved through the cooperation of the inner knife assembly and the outer knife assembly; in addition, a driving member is sleeved on the connecting rod, and the driving member can slide along the axial direction of the connecting rod. An operating member is also sleeved on the connecting rod, and the operating member can rotate around the axis of the connecting rod. The operating member and the driving member are also connected by a thread, so that the driving member can be driven to slide along the axial direction of the connecting rod by rotating the operating member; in addition, in the planing assembly, the front end of the bending body near the knife head has a first connecting member The first connection position and the second connection position, the first connection position and the second connection position are arranged on both sides of the bending body, the connecting rod is elastically connected to the second connection position, and the driving member is drivingly connected to the first connection position; when adjusting, first rotate the operating member to make the driving member slide along the axial direction of the connecting rod, and the bending body is bent by the driving member to achieve the adjustment of the angle of the cutter head. During this process, the second connection position is always subjected to the elastic force transmitted by the connecting rod, so that the bending body can be suspended at any position under the cooperation of the connecting rod and the driving member; in this scheme, the sliding of the driving member on the connecting rod is driven by the operating member. Since the operating member and the driving member are threadedly connected, the sliding of the driving member is continuous, so the driving member can stop at any position, thereby realizing the adjustment of any bending angle of the cutter head, thereby improving the accuracy and flexibility of the angle adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of the planing assembly provided by the utility model;

[0021] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0022] Figure 3 A schematic diagram of the cross-sectional structure of the planing assembly provided by the utility model;

[0023] Figure 4 for Figure 3 A partial enlarged view of point B in the middle;

[0024] Figure 5 for Figure 3 A partial enlarged view of point C in the middle.

[0025] Description of Figure Numbers:

[0026] 100, outer knife assembly; 110, connecting rod; 111, first limiting groove; 112, second limiting groove; 120, bending body; 130, knife head; 200, inner knife assembly; 300, driving member; 310, first limiting body; 400, operating member; 410, first identification body; 500, wire drawing assembly; 510, first wire drawing; 520, second wire drawing; 600, elastic member; 610, second limiting body; 700, locking member; 800, limiting member; 810, second identification body; 900, sealing sleeve.

[0027] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0031] In order to achieve precise adjustment of the angle of a medical planer, this technical solution proposes a planing assembly, including:

[0032] An outer knife assembly 100, including a connecting rod 110, a bending body 120 and a knife head 130 connected in sequence. Among them, a first connection position and a second connection position are respectively provided on both sides of the front end of the bending body 120, and the connecting rod 110 is elastically connected to the second connection position;

[0033] An inner knife assembly 200, which is bendably arranged inside the outer knife assembly 100;

[0034] A driving member 300, which is slidably sleeved on the connecting rod 110 and is drivingly connected to the first connection position to drive the bending body 120 to bend;

[0035] An operating member 400, which is rotatably sleeved on the connecting rod 110 and is threadedly connected to the operating member 400.

[0036] Such as Figures 1 to 5 , in an embodiment of the present invention, the planing assembly includes an outer knife assembly 100, and the outer knife assembly 100 has a connecting rod 110, a bending body 120 and a knife head 130 connected in sequence; the connecting rod 110 can be fixedly connected to the bending head, or can be fixed by means of hinge, and the connecting rod 110 is used to be fixedly connected to the handle, and the bending body 120 can swing in a single direction, such as Figure 3, the bending body 120 can swing up and down with the connection point with the outer catheter as the center, and the maximum swing range can be customized according to actual needs; the blade head 130 is installed on the bending body 120, and the connection between the two can also be fixed, hinged, and other ways to ensure that the swing of the bending body 120 can effectively guide the blade head 130 to swing synchronously; a first connection position and a second connection position are provided at one end of the bending body 120 close to the blade head 130, and the first connection position and the second connection position can be a protrusion or a hole structure provided on the outer peripheral wall of the bending body 120, and the first connection position and the second connection position are provided on opposite sides of the bending body 120. The structure of the blade head 130 draws on the prior art. In this embodiment, the blade head 130 has a built-in planing space and a window is provided on one side. The window design forms are various, for example, the edge can be provided with a serrated structure. When the bending part swings, the blade head 130 deflects accordingly, and the direction of the window is also adjusted accordingly, and operations can be performed on different lesion directions without moving the connecting rod 110. It is particularly noteworthy that the swing trajectory of the bending portion can match the direction of the window of the blade head 130; as for the structure of the bending body 120, this embodiment proposes a design concept but is not limited to the following: the bending body 120 can be composed of a series of serpentine rings, which are hingedly arranged with each other. In addition, the bending body 120 can also adopt a spring tube structure.In addition, the planing assembly also includes an inner knife assembly 200, which is arranged inside the outer knife assembly 100. The inner knife assembly 200 can adopt a structure similar to that of the outer knife assembly 100, so that the inner knife assembly 200 can swing synchronously with the outer knife assembly 100. In addition, the inner knife assembly 200 can be driven to rotate by a motor, and the inner knife assembly 200 is provided with an inner knife head, and the inner knife head also has a window and a serrated structure arranged on the edge of the window. In this way, when the inner knife assembly 200 rotates, the inner knife assembly 200 can cooperate with the outer knife assembly 100 to plane the target tissue; in addition, in the present embodiment, a driving member 300 is sleeved on the outside of the connecting rod 110, and the driving member 300 is a cylindrical structure, and the driving member 300 can rotate along The connecting rod 110 slides axially, and an operating member 400 is sleeved on the outside of the driving member 300. The operating member 400 is rotatably connected to the connecting rod 110. In addition, the outer peripheral wall of the driving member 300 is provided with an external thread, and the inner wall of the operating member 400 is provided with an internal thread. The internal thread engages with the external thread to realize the threaded connection between the operating member 400 and the driving member 300. When the operating member 400 is rotated, the operating member 400 can drive the driving member 300 to slide. In order to facilitate the operation of the operating member 400, the outer peripheral wall of the operating member 400 can be provided with an anti-slip groove to increase the friction with the hand; in addition, in this embodiment, the connecting rod 110 can be connected to the second connection position by a spring or an elastic pull wire, and the driving member 300 can be connected to the second connection position by a rod or a wire The first connection position is connected to the second connection position. When adjusting, the operating member 400 can be rotated to drive the driving member 300 to slide. For example, when the driving member 300 slides away from the cutter head 130, the driving member 300 will pull the cutter head 130 to bend toward the first connection position. Since the connecting rod 110 is elastically connected to the second connection position, the second connection position is always subjected to the elastic force driving the bending body 120 to bend in the opposite direction. In this way, it can be ensured that after the position of the cutter head 130 is adjusted, the bending body 120 is always tightened and fixed, so that the position of the cutter head 130 is fixed. When the driving member 300 slides close to the cutter head 130, the second connection position will drive the bending body 120 to bend in the opposite direction under the action of the elastic force applied by the connecting rod 110. In this way, the driving member 300 The angle of the cutter head 130 can be adjusted by sliding the driving member 300. In the present embodiment, the operating member 400 and the driving member 300 are threadedly connected so that the operating member 400 can drive the driving member 300 to slide continuously, and the driving member 300 can also stop at any position, so that the bending body 120 can be adjusted to any angle, thereby achieving precise adjustment of the angle of the bending body 120. In addition, the thread angle between the operating member 400 and the driving member 300 can be flexibly adjusted, so that the threads can be self-locking. In this way, after the position of the driving member 300 is adjusted, the driving member 300 will not be subjected to axial force and will not cause the operating body to rotate, thereby ensuring the stability of the cutter head 130 after the angle is adjusted.

[0037] like Figure 3In one embodiment of the utility model, the planing assembly also includes a wire pulling assembly, the wire pulling assembly includes a first wire pulling assembly and a second wire pulling assembly, the first connecting position is connected to the driving member through the first wire pulling assembly, and the second connecting position is elastically connected to the connecting rod through the second wire pulling assembly; in this embodiment, the first wire pulling assembly 510 and the second wire pulling assembly 520 can be stainless steel wire or other wires that will not undergo elastic deformation, the first wire pulling assembly 510 and the second wire pulling assembly 520 are respectively arranged on opposite sides of the outer knife assembly 100, in addition, the first connecting position and the second connecting position are both configured as through holes extending along their own axial direction on the side wall of the bending body 120, and the through holes are arranged Two through holes are arranged on both sides of the swinging direction of the bending body 120, and the first pull wire 510 and the second pull wire 520 are respectively inserted into the two through holes and fixed to the end of one side of the bending body 120 close to the cutting head 130. In this way, the swinging of the bending body 120 can be realized by pulling the first pull wire 510 and the second pull wire 520. In addition, the other end of the first pull wire 510 is inserted into the connecting rod 110 and fixed to the driving member 300, and the other end of the second pull wire 520 is inserted into the connecting rod 110 and elastically connected to the connecting rod 110. The elastic connection method can be connected to the connecting rod 110 through a spring. When adjusting, the driving member 300 can drive the bending body 120 to bend by pulling the first pull wire 510, and the second pull wire 520 can remain elastically tensioned, to ensure that after the position is adjusted, the first pull wire 510 and the second pull wire 520 cooperate to tighten and fix the bending body 120, so as to fix the position of the cutter head 130; in this scheme, the use of the first pull wire 510 and the second pull wire 520 can not only simplify the structure, but also be more convenient to arrange on the outer knife assembly 100, which is beneficial to reducing the overall size of the planing assembly.

[0038] like Figure 4In one embodiment of the utility model, the planing assembly further comprises an elastic member 600, and the elastic member 600 has a relative support end and a free end, the support end is connected to the driving member 300, and the free end is connected to the second pull wire 520. In this embodiment, the elastic member 600 can be an axial compression spring, and the elastic member 600 can also be sleeved on the outside of the connecting rod 110 and arranged on the side of the driving member 300 away from the outer knife assembly 100, one end of the elastic member 600 abuts against the driving member 300, and the other end can be fixedly connected to the second pull wire 520, and the elastic member 600 can always be in a compressed state, that is, the elastic member 600 can always keep the second pull wire 520 taut, and when the bending body 120 bends toward the side of the first pull wire 510, The second pull wire 520 is pulled out toward the bending body 120, and the elastic member 600 continues to be compressed. When the bending body 120 bends toward the side of the second pull wire 520, the elastic member 600 restores its deformation, so that the second pull wire 520 is always taut. In this solution, the elastic member 600 is used to apply a force to the second pull wire 520, so that the first pull wire 510 and the second pull wire 520 are always in a taut state before and after adjustment, thereby preventing the blade 130 from shaking during use, thereby ensuring the safety of the operation.

[0039] like Figure 4 In one embodiment of the utility model, the side wall of the connecting rod 110 is concavely provided with a second limiting groove 112, and the free end is convexly provided with a second limiting body 610, the second limiting body 610 is slidably matched with the second limiting groove 112, and the second pull line 520 is connected with the second limiting body 610. Among them, the second limiting groove 112 is set on the outer side wall of the connecting rod 110, the second limiting groove 112 and the first limiting groove 111 are set on the opposite sides of the connecting rod 110, and the second limiting groove 112 extends along the axial direction of the connecting rod 110, and the end of the elastic member 600 away from the driving member 300 can be bent toward the second limiting groove 112 to form the second limiting body 610, so that when the driving member 300 slides, the cooperation between the second limiting body 610 and the second limiting groove 112 can limit the rotation of the elastic member 600, thereby improving the stability of the elastic member 600 when pulling the second pull line 520, and thereby improving the stability of the cutter head 130 when adjusting the angle.

[0040] like Figure 4In one embodiment of the utility model, the side wall of the connecting rod 110 is concavely provided with a first limiting groove 111, the driving member 300 is convexly provided with a first limiting body 310, the first limiting body 310 is slidably matched with the first limiting groove 111, and the first pull wire 510 is connected with the first limiting body 310. The first limiting groove 111 is set on the outer side wall of the connecting rod 110, and the first limiting groove 111 extends along the axial direction of the connecting rod 110. The cross-sectional shape and size of the first limiting body 310 on the driving body in the radial direction can be adapted to the cross-sectional shape and size of the first limiting groove 111. In this way, when the driving member 300 slides, the cooperation between the first limiting body 310 and the first limiting groove 111 can limit the rotation of the driving member 300, thereby improving the stability of the driving member 300 when pulling the first pull wire 510, and further improving the stability of the cutter head 130 when adjusting the angle.

[0041] like Figure 1 and Figure 4 In one embodiment of the utility model, the planing assembly further includes a locking member 700 , which is sleeved on the connecting rod 110 , and the locking member 700 is threadedly matched with the connecting rod 110 to move along the axial direction of the connecting rod 110 and thereby abut against or disengage from the driving member 300 . The locking piece 700 is sleeved on the connecting rod 110 and is arranged on the side of the operating piece 400 away from the cutting head 130. An external thread is provided on the connecting rod 110 at a position corresponding to the locking piece 700. The locking piece 700 is screwed to the external thread, and the locking piece 700 can be rotated to move closer to or away from the operating piece 400. After adjusting the angle of the cutting head 130, the locking piece 700 can be rotated to abut against the operating piece 400. The friction between the locking piece 700 and the operating piece 400 can prevent the operating piece 400 from rotating during use, thereby achieving locking of the operating piece 400 and improving the safety of the operation. When it is necessary to adjust the angle of the cutting head 130, the locking piece 700 can be rotated so that the locking piece 700 is disengaged from the operating piece 400. At this time, the operating piece 400 can be freely rotated to adjust the angle of the cutting head 130.

[0042] like Figure 1 and Figure 3 In one embodiment of the utility model, the planing assembly further includes a limiter 800, which is sleeved on the connecting rod 110, and the limiter 800 cooperates with the locking member 700 to limit the operating member 400 in the axial direction of the connecting rod 110. The limiter 800 is fixed to one end of the connecting rod 110 close to the cutter head 130, the operating member 400 abuts against the limiter 800, and the limiter 800 cooperates with the fastener to limit the operating member 400, and the operating member 400 rotates between the limiter 800 and the fastener, so that the reliability of the planing assembly can be improved.

[0043] like Figure 2In one embodiment of the utility model, a first identification body 410 is provided on the outer peripheral wall of the operating member 400, and a second identification body 810 is provided on the outer peripheral wall of the limiting member 800. A plurality of second identification bodies 810 are provided at intervals along the circumference of the limiting member 800, and the second identification bodies 810 are located opposite to the first identification body 410. The first identification body 410 may be an arrow pattern, and the second identification body 810 may be a scale of multiple angles arranged around the limiting member 800. Thus, when the operating member 400 is rotated, the current bending angle of the cutter head 130 can be known by observing the corresponding positions of the first identification body 410 and the second identification body 810, thereby improving the convenience of using the planing assembly.

[0044] like Figure 4 In one embodiment of the utility model, the planing assembly further includes a flexible sealing sleeve 900, which is sleeved on the outside of the bending body 120. The flexible sealing sleeve 900 can be made of a rubber tube or other materials. The flexible sealing sleeve 900 is sleeved on the outside of the bending body and has an interference fit with the bending body. The flexible sealing sleeve 900 can protect the bending body 120 and can also seal part of the bending body 120 to prevent foreign matter from entering the bending body 120, thereby improving the reliability of the planing assembly.

[0045] The utility model also proposes a surgical device, which is provided with a planing component for removing diseased tissue. The specific structure of the planing component refers to the above embodiment. Since the surgical device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0046] The above are only exemplary embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A planing assembly, characterized in that: include: The outer knife assembly comprises a connecting rod, a bending body and a knife head which are connected in sequence, wherein a first connecting position and a second connecting position are respectively provided on both sides of the front end of the bending body, and the connecting rod is elastically connected to the second connecting position; An inner knife assembly is bendably disposed inside the outer knife assembly; A driving member, slidably sleeved on the connecting rod and drivingly connected to the first connecting position to drive the bending body to bend; An operating member is rotatably sleeved on the connecting rod and is threadedly connected to the operating member.

2. The planing assembly according to claim 1, characterized in that The planing assembly also includes a pull wire assembly, which includes a first pull wire and a second pull wire. The first connecting position is connected to the driving member through the first pull wire, and the second connecting position is elastically connected to the connecting rod through the second pull wire.

3. The planing assembly according to claim 2, characterized in that The planing assembly further comprises an elastic member, wherein the elastic member has a supporting end and a free end opposite to each other, wherein the supporting end is connected to the driving member, and the free end is connected to the second pull wire.

4. The planing assembly according to claim 3, characterized in that A second limiting groove is concavely formed on the side wall of the connecting rod, a second limiting body is convexly formed on the free end, the second limiting body is slidably matched with the second limiting groove, and the second pull wire is connected to the second limiting body.

5. The planing assembly according to claim 2, characterized in that A first limiting groove is concavely formed on the side wall of the connecting rod, a first limiting body is convexly formed on the driving member, the first limiting body is slidably matched with the first limiting groove, and the first pull wire is connected to the first limiting body.

6. The planing assembly according to claim 1, characterized in that The planing assembly further comprises a locking member, which is sleeved on the connecting rod. The locking member is threadedly matched with the connecting rod to move along the axial direction of the connecting rod and then abut against or disengage from the driving member.

7. A planing assembly according to claim 6, characterized in that The planing assembly further comprises a limiting member, which is sleeved on the connecting rod and cooperates with the locking member to limit the operating member in the axial direction of the connecting rod.

8. The planing assembly according to claim 7, characterized in that A first identification body is arranged on the outer peripheral wall of the operating member, a second identification body is arranged on the outer peripheral wall of the limiting member, a plurality of the second identification bodies are arranged at intervals along the circumference of the limiting member, and the second identification body is opposite to the first identification body.

9. The planing assembly according to claim 1, characterized in that The planing assembly further comprises a flexible sealing sleeve, which is sleeved on the outside of the bending body; and / or the bending body is configured as a snake tube or a spring tube; and / or an anti-slip groove is provided on the outer peripheral wall of the operating member.

10. A surgical device, characterized in that: A planing assembly comprising any one of claims 1 to 9.

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